Trap



Patented Apr. 5, 1927.

Joan-Emilia womiivrangor YORK; Passes-reveals.

TRAP.

, I Applicationfiled December 2, 192th Serial No: 1553;284;

1 v relates to traps and-itis n: o je t? of; h in e io t pro e e vice ofthis kind provided withm'eans to preventbackjflow of water or sewage and5 which alsofprovided withfa readily removable lid; carrying astrainer.I

lt is ELlSOfjtll object; of the invention to providexa-device' ofthiskind employing a lid of-such dimensions wherein the desired loca-rrying; offofwwater or thelike is materially facilitated; V T Th iinsnt n' co s ts finith d tai s of construction and in the combination andarrangement of the several parts of my imvantages are attained and thedevice rendered simpler, less expensive and otherwise more convenientand advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the. accompanyingdrawing, wherein :Q

Figure 1 is a view partly in section and partly in elevationillustrating a trap constructed in accordance with an embodiment of myinvention;

Figure 2 is a view in cross section of the trap as herein disclosed withthe ball valve and bridge piece omitted, the line of section ofFigure 2being at approximately a quarter turn to the line of section of Figure1.

As disclosed in the accompanying drawing, B denotes a basin memberadapted to be fitted in a well known manner within the bell end of asewer pipe or the like and which is provided at its lower portion withan inwardly disposed annular flange 1. The side wall 2 of the basinmember B is also provided with diametrically opposed inwardly disposedribs 3, the upper ends of which being flush with the top of the sidewall 2. s

upper end portion of the side wall 2' of the member B and is providedwith the inwardly directed lugs 4 disposed over the upper ends of theribs 3. whereby the lid L may be held in applied position with respectto the basin member B through the medium of the screws 5 or the like,said screws being freely disposed through the lugs 4 but in threadedengagement with the ribs 3. y

proved trap whereby certain important, ad-

An annular lid L is engaged with the TheqlidLis ofp'ronounced diameterand has its upper surface 'conc avedi The peripheral portion of the lidL is provided withan annular rab'bet G-to receive the: marginal; portionof astrainer 7, said'stra'iner being maintained in; appliechposition bythe screws- 8' or the likedisposefd through the-- peripheral portion, ofthe; strainerahd 'inf threaded engagement with the diametrically ifopposed. lugs 9.- It is to be noted that the- Iid L 'Inay-beconveniently applied or removed which,inpracticegds of material advantage especially in the initial cost of production and furthermore inthat it permits a ready replacement of a lid L when required and thusavoiding the necessity of installing an entirely new trap.

Snugly fitting within the central opening 10 defined by the flange 1 ofthe basin memher B is an annular valve seat 11. Disposed around thisseat 11 is a washer 12 of Bab bitt metal or the like to assure awater-tight fitting of the valve seat. The upper portion of the valveseat is provided with an outstanding flange 14 overlying the flange 1whereby the screws 15 may be employed to maintain the valve seat inposition.

As herein disclosed, certain of the screws 15 are diametrically opposedand serve to hold to the valve seat a bridge piece 16ex tending radiallyacross the valve seat. The central portion of this bridge piece 16 isupwardly disposed and provided with an opening 17 through which isfreely disposed a rod 18. The upper extremity of the rod 18- is providedwith a head 19 to limit the downward movement thereof with respect tothe bridge piece 16 while the lower end portion thereof is in threadedengagement with a ball valve 20. Under normal conditions the ball valve20 is unseated and sus pended from the bridge piece 16 by the enlargement or head 19 of the rod 18.

Upon back flow of water, sewage, or gas, the ball valve 20 will be movedto its seat and thus effectually prevent such flow up and outwardlythrough the basin member B.

I find it of advantage to interpose between the extremities of thebridge piece 16 and the flange 14 of the valve seat the washers 21surrounding the screws 15 coacting with the bridge piece 16,

From the foregoing description it is thought to be obvious that a trapconstructed in accordance with my invention is particularly well adaptedfor use by reason of the convenience and facility with which it may beassembled and operated, and it will also be obvious that my invention issusceptible of some change and modification Without departing from theprinciples and spirit thereof and for this reason I do not wish to beunderstood as limiting myself to the precise arrangement and formationof the several parts herein shown in carrying out my invention inpractice ex cept as hereinafter claimed.

I claim z A trap comprising a basin member provided with an inturnedflange at its lower portion defining a central opening, a valve seatsnugly fitting within such opening and provided with a flange overlyingthe flange of the basin member, means for securing said flangestogether, a bridge piece disposed substantially radially across saidcentral opening, certain of the means for se curing the flanges togetherholding the end portions of the bridge piece to the flange of the valveseat, a rod freely disposed through said bridge piece and extendingthrough the central opening of the basin member, said rod having anenlargement above the bridge piece to limit the downward movement of thebridge piece, a ball valve underlying the valve seat, the lower portionof the rod and the ball valve having coacting means for connecting thesame one to the other, an annular lid of material diameter having itsinner marginal portion resting upon the upper portion of the basinmember, means for detachably securing the lid to the basin member, and astrainer supported by the outer marginal portion of the lid.

In testimony whereof I hereunto ailix my signature.

JOHN ELMER lVORKMAN.

